The Xiros Mikro comes standard with an interchangeable 5 heated stainless steel Shelf Stack. This 5-shelf setup is easily changed into a 3, 7, or 9-shelf configuration — it's plug and play. Depending on your freeze-drying application, you can choose the shelf setup that best fits your process. When you change to a different process, just switch shelf stacks. Any of these interchangeable shelf stacks provides a high-capacity and space-saving solution for your freeze drying needs. These stacks are easily interchangeable with one plug outlet at the back of the tray assembly. See our YouTube video how easy it is to change it. All Shelf Stacks have fixed shelves that are individually heated. Per shelf you have 465 mm x 210 mm of usable space. Made of corrosion-resistant stainless steel, ensuring a durable and maintenance-friendly solution. All trays used have the same inner width and depth of 185 mm x 435 mm and come in various heights: 12 mm (for 9-shelf), 15 mm (for 7-shelf), or 20 mm (for 3- and 5-shelf stacks). Extra trays are available in packs so you can pre-freeze your next batch while the machine is running a cycle, significantly shortening the total freeze-dry process time and ensuring continuity of your workflow.